Apparatus for the simultaneous conveying and grading of materials.



v H. MARCUS. APPARATUS FOR THE SIMULTANEOUS CONVEYING AND GRADING OF MATERIALS.

' APPLICATION FILED NOV. 25,1911.

1,173,597. Patented Feb. 29,1916;

2 SHEETS-SHEET I.

Witnesses HE COLUMBIA PLANOGRAPH c0., WASHINGTON, D. c.

H. MARCUS. APPARATUS FOR THE SIMULTANEOUS CONVEYlNG AND GRADING OF MATERIALS. APPLICATION FILED Nov.2 5. 1911.

1, 173,597. Pat canted Feb. 29, 1916.

2 SHEETS-SHEET 2- aw W Tm: COLUMBIA PLANOGRAPH c0., WASHINGTON,

" uNiTEn s Tns HERMANN MARCUS, or" COLOGNE, GERMANY.

ArrARATiIs EOR -TI-IE sIM ULTAnEoUs convrirrue AND GRADING orMATnRIALs;

' To all whom-it may comm Be it knownthat LIHERMANN MARCUS,

engineer, a subject of the German Emperor, I

-residing at Gereoushaus, in Cologne-on-the- Rhine, Germany have invented new and useful Improvementsin Apparatus for the "Simultaneous Conveying and Grading of Materials, of whichthe following is a speci- The/grading ofmaterials in different sizes has principally been effected :hitherto byxcausii g the material to pass .over in succession' a number of screens the perforations in which respectively increase injsize step by step. This well known arrangementhowever has many disadvantages. On ;the one hand the material is rubbed and damaged during its passage over the perforations iin .thelscreen and on the other hand the screen itself also naturally suffers thereby. Finally the perforations in the screen very easily get choked up whereby the grading becom'esinjuriously afiected or interrupted.

' The present invention relates to a novel device or apparatus for the simultaneous terials such as ores, coal and the like. v

' According to this invention a support *troughchute or thelikeis employed having the bottom-plate provided with discharge surfaces which incline downward atan angle with'the plate and in a direction: opposite to that in which the material is to. be conveyed. Bygiving the support an accelerated movement in the forward direction, that .'i's,"in the direction in iwhichthe material is to jbe conveyed,the following will take QplacerWhen the-support and the inclined .S'surfacesfare accelerated intheir forward movement the pressure on the top of the smaller pieces of material is reduced so that f as the support in its forward movement and onthe return movement of the support are carried forward by-their own momentum, andthus gradually reach dischargesurfaces they. slide downward and aregraded out through the openings.- .j The larger pieces on the-other hand which do not pass through the openings receive the. same acceleration with larger openings through which theyin 1 turn are graded out.

The. essential feature of the device according to the present invention resides herein that on the forwardjs'troke of the support the smaller pieces move backward thereon and become graded out, while, the

' Application filed November 25, 1911. Serial No.662 ,'343.

' sp a of Letters-Patent- Patented rep. 2 9, mi e.

larger pieces are moved forward and conveyed'farther V Figurel is a longitudinal section of a portion of the trough; Fig; 2 is a cross-section of the trough. Fig. 3 is a sectional detail of a modified form. Fig. 4 is afragmentary plan view. Fig. 5 1s a View similar to Fig. 1

3, showing a modified form. Fig. 6 is a view similarto Fig. 2 of another'modification.

Figs. 7 and 8 are longitudinal and transverse sections-respectively of a further modiof adjusting. the inclination of the bottom surfaces. 1 I

, In-Fig. l of the drawings, a portion of the trough of support ais shown having the bottom p provided with discharge surfaces Z), 0,-cZ which incline downward-therefrom at an angleandto an increasing depth. The said discharge surfaces incline down-- .wardat an angle in a direction opposed to thatin whichthe. material is to be conveyed as indicated by the arrow. The discharge surfaces and correspondingopenings inthe screen maybe of any desired width.

fication Figs. '9' and 10 show. the manner V When the support or trough, upon which the materialv to beiconveyed and graded is placed, receives an accelerated movement forward inthe direction indicated by the arrow, the following effect takes place. The

smaller pieces lying forexample on the in- I clined discharge surfaces 6, owing to the pressure imposed on the inclined surfaces being diminished by the accelerated movement, slide down the said surfaces and are graded'out, through the openings 6. The larger pieces on the other hand, which cannot pass through the openings 6, partake in the accelerated forward movement together with the remainder of the material resting upon the bottom p of the trough and shoot forward upon the'trough as the trough is suddenly arrestedfor the reversed movement. As this to and fro movement of the trough is repeated for sometime the material not graded out graduallyreaches the larger discharge surfaces'e, d and so on,

whereby the material is graded into different gages. U 1

On the forward stroke'of the trough, the

smaller pieces to move backward toward the screen openings. The larger pieces, however, restmg upon'the same inclined surfaces inclination of. the discharge surfaces has,

as described, the effect of causing thev might easily partake inthis backward, move- 1 to 7 ing movement and the horizontal upper cornersof which exactly'coinclde with the.

ment in an undesirable manner. :Thiscan be avoided in' a manner illustrated in Figs.' 2-4:. V. The inclined depending discharge channels are in this caseprovidedwith in-.

clined rising side walls fand are thereby'for' example so formed that the discharge surfaces 0 extending over the whole width of V the support comprises a'plurality of wedgeshaped pieces m which are parallel to one another and tothe direction-of the conveybottom 19' of the support While the cross section of the same constantly diminishes to-' ward the discharge openings (l 'fiig. 4).;-As shown in Figs Q- L this isattalned for exf ample by pressing the bottom plate of the I trough into the desired shape. In this manner each downwardly inclined; discharge channel has an inclined bottom 0 andtwo lIlCllIlGCl rlsing side surfaces f Y which latter inclose between them an angle of about 50 40 7 The object of this are 'r-angement is as followsz-The smaller pieces of-ma'terial, for example, those shown at h in Fig. 2, which come directly into. contact with-the bottom; 0 of the discharge channel,

.slide downward onthe forward stroke and are graded out through theopemngs The somewhat larger pieces, for example, the pieces 11, on the other hand, whlch touch the side wallsf of the discharge channels are "subjected'to an increase of pressure from above upon these'side walls owmgto their.

particular inclination without'the possibility however of causing obstruction by sticking. Upon the forward accelerated movement therefore, the diminution in the imposed pressure, which diminution is due to the downward inclinationof the discharge channeLL isbalanced, so far asthelarger carried forward that is to say,partake in the I pieces areconcerned, .by the increase in the imposedpressure towhich these pieces, are subjected upon the inclined side surfaces 7. The effect of this increase in the imposed pressure is that on the forward stroke of the support the larger pieces :not' only cannot slide fartherbackward but are necessarily acceleration and are conveyed farther forward. The very large pieces simply, remain upon the upper parallel pieces is which bridge'the spaces between the inclined dis- I charge surfaces and partake likewise in the acceleration and. further conveyance upon 'ths forward stroke of the support.

1N 0t only the distance n between, but also the angle of inclinationof, each two-side surfaces 1 which form the limiting'walls of each d-i's'chargechannel, should be so chosen that thematerial is graded out up to a certain gage while the larger pieces on the other hand are necessarily conveyed farther forward. 7 v

In certain cases the bottom 0 of the downforming' the loosening the material.

wardly inclined discharge channels might in a manner shown in Fig. 5 be given an up- Ward bend so that the pieces of material 2',

.the .pressureupon which fromgaboveisincreased by contact'with the "inclined side surfaces 7", may asirapidly as possible, upon the forward movement of the support come into contact withthe horizontal portions of the bottom p'which approach one another. In Fig. 6, there is illustrated a modified arrangement for carrying -this-:invention-;

into effect in which the wedge-shaped are constituted by solid wedges-im resting on the V inclined discharge surfaces 7 0 and downwardly inclined side surfaces f. p p

The support or trougha mightobviously be moved'to' andsifro, in certain cases,:i-na p 8 5 straight or curved path and inclined-in one direction or the other-instead of .meving' in a horizontal plane.

In order to avoid wardlyextended dischargeopenings,,rods g may be arranged, fbelow the reciprocating thereby loosening the material s'o that the :pieces between each two discharge channels screening of the smaller and :largejrj pieces cis always maintained. lip

through corresponding discharge? openings I 1 As shown m sectioninFig. B each discharge surface I) mayjextend across the i entire breadthof the bottom ofthe trough andmay be provided near the :lowerfdiss. charge opening 0 with a comb-like arrangement of verticaldivislon wallsr. The' comb formed by the rods .gen'gages between the aforesaid division wallsfin suchia manner that as the:conveying trough moves to and frothe two combs. work within and between onefanother and .therebycause an effectual loosening: of the. material; The] rods 9 are inc'linedat suchan a gle/thatasi I the trough moves llOIflZOIltll'llVtO. and fro the comb of rods g moves within -thecomb. r not only lna hor zontal direction butj-also relatively to the latter in a vertical di'rection thereby" producing an increase-effect in In certain cases the rodsig may be" given suc lra lengthas to remain in the screen openings duringythe whole or nearly the. whole of the stroke. Furtherthe' rodsg might be replaced by an equal number of jets of fluid adapted to play constantly into the discharge openings 0 of the jigging trough of the screening conveyance; and thereby loosen the material.-

In theconstruction shown in Figsi) and 10 the inclined bottom surfacesb-are 'not rigid but; are each adapted to" rotate about an axis a located-below them soith'at the i surf-aces can be adjusted in position at -different angles, In'thi's' manner the siz'e of the dischargeopenings'c' can be regulated and thereby also the grading effect. "Further the rotatable bottom surfaces may "be moyed into a vertical or nearly vertical position as shown in Fig. '10 so" that all the material upon the bottom surfaces and between the bridging pieces may fall vertically downward thus permitting the whole screen surface to be very easily and rapidly cleaned. By thus constructing the bottom'surfaces so as to be capable of rotation it is lastly possible to adjust said surfaces in a horizontal position so that the bottom of the trough is completely closed and no further V i screening or grading can beeflt'ected but only afurther conveyance of the material can take 1 place. The grading or screening can there fore be completely interrupted for a time. In cases where regulation of the grading eifectis not desired the dividing walls. a may be secured to the under'sideof the rotatable bottom plates so as to normally rest upon the upper surface of the next-following bottom plate and so that when thebottom surfaces 'are'turned into approximately the vertical position the dividingwalls will likewise be moved upward into a similar position and thus free the inclined bottom surthe preceding walls."

faces. In certain casesthe dividing walls might also be arrangedon the upper side of the bottom plate'sso as to normally rest against the underside'of the preceding bottom plate. i I 7 What I claimand desire to secure by Let- I ters Patent is:

' '1. An apparatus for the simultaneous conveying and grading of materials comprising a horizontally disposed reciprocable trough having a bottom portion provided with openings therein of progressively increasing sizes from the receiving to the discharge direction of the trough, said openings having downwardly inclined walls beneath the same and open at the rear where- 'by particles passing through said openings 50 will be discharged in a direction opposite to the conveying direction of the materials upon the bottom of the trough during the reciprocation thereof, the rear ends of said walls terminating 1n close proximity and substantially beneath the forward ends of 2. 'An apparatus for the simultaneous conveying and grading of materials comprising .a horizontally disposed reciprocable trough having a bottom portion provided with openings therein of progressively increasing sizes from the receiving to the discharge direction of the trough, said openings having downwardly inclined walls beneath the same and open at the-rear whereby particles passing through said openings will be discharged in a directionopposite' tothe conveying direction-- of the materials upon the bottom of the trough during the reciprocation thereof,-t he bottomportions of the trough between" said, openings being substantially. horizontally disposed and over lyingthe succeeding'bottom portions of suc ceeding openings with respect to the directlonofconveyance- 3; An apparatus forthe s multaneous conveying and grading of materials comprising a hOIlZOIltiLllY' disposed reciprocable trough having a bottom portion provided with openings therein of progressively increasing sizes from the receiving to the discharge direction of the trough, said openings having downwardly inclined walls beneath the same with their rear ends lying substantially beneath the adjacent ends of the preceding openings and open at the rear whereby particles passing through said openings will be discharged in a direction opposite to the conveying direction ofthe materials upon the bottom of the trough during the reciprocation thereof, the bottom portions of said openings tapering toward their discharge ends and having inclined side walls diverging upwardly and of uniform outward dimension whereby the sides of the openings are parallel. I r

4. An apparatus for thesimultaneous conveying and grading of materials comprising a horizontally disposed reciprocable trough havinga'bottom portion provided with openings therein of progressively increasing sizes from the receiving to the disopenings are parallel, said bottom portions having a slight upward bend producing convexity of their operative surfaces throughout their lengthsito facilitate the conveying operation andoverlying the next succeeding bottom'portions. l

5. Anapparatus for simultaneously conveying and grading materials comprising a reciprocable horizontal support, said support being provided with openings in its bottom of progressively increasing sizes and arranged in transverse rows across the support, downwardly inclined surfaces positioned beneath said openings and inclining to progressively increasing depth correspondingly to the progressive increasing sizes of the openings whereby materials of gradually increasing sizes Will beprogressive'ly discharged through said openings for grading the same during; vthe reciprocation of the support,

each of said surfaces-extending throughout the entire length of its associated opening to prevent the materials from dropping directly through the openings and inclining in' a direction opposite to the direction of travel of the material upon the supportcwhereby the sorted out material Will travel in a direction opposite to that of the conveyed ma- 7 Oopies of this patent may be obtained rior clogged:

terial upon reciprocation of the s11pport, and

-,n1eans operating ineach opening to eject which has rbecome l material therefrom lVitnessesi V M. Ki'IPPERs, HANS DUMQNT.

five cents each, by addressing the "fc on missioner of Patents, WashingtonJ). c."

' :HERMANNfMARCUSQ J p 

